I've got a 997 & a 798CI. On the 798 when the boats in 5 ft or less, all I get is a screen full of color. And on the 997, the sonar just isn't reading right. I think I did all of this when I set up both units after rescent download updates. So...what should I set both units up for my sonar, side & down imaging? I'd actually like someone to tell me how they set up their units from sensitivity to the correct transducer settings. I fish on a lake that has real clear water if that matters. Thanks.